<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <div><el-button type="info" @click="logout">退出</el-button></div>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- :unique-opened="true" 侧边栏点击谁谁展开没点击就收回 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color='#409EFF'
          :unique-opened="true"
          :collapse='isCollapse'
          :collapse-transition='false'
          :router="true"
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu :index='item.id + " "' v-for="item in menulist" :key="item.id">
            <!-- 一级菜单模板 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
              <template slot="title">
              <!-- 图标 -->
              <i class="el-icon-menu"></i>
              <!-- 文本 -->
              <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao',
      },
      isCollapse: false,
      activePath: '',
    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
   
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$message.success("退出成功");
      this.$router.push("/login");
    },
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data;
      console.log(res);
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath',activePath)
       this.activePath = activePath
    },
  },
};
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d37;
  display: flex;
  justify-content: space-between; //分为左右两块
  padding-left: 0px; //最左边图标没有间距
  align-items: center; //让按钮居中
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
    .el-menu {
      border-right: none;
    }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color:dimgray;
  text-align: center;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;//hover时鼠标变小手
}

</style>